GRAIN DRYER & PARTS BOOK - Opico

9. SERVICING AND CARE OF AGITATOR
It is important that the agitator be inspected before and after the first load. Then after each 100 hours
of operation.
A. The tapered agitator rollers must support the plate sprocket so there is no horizontal movement
of sprocket.
The RAB has four rollers mounted on the agitator sprocket so each roller supports an equal load.
These rollers are tapered so all horizontal and vertical slack may be taken up.
B. Adjusting Rollers
1. Secure the cam nut and loosen the bolt
2. Rotate the cam nut counter-clockwise (when looking down into the cam nut) while holding
the bolt stationary.
3. Secure the cam nut and tighten the bolt.
4. All cam nuts must be rotated an equal amount so the agitator sprocket remains true.
5. Rotate agitator arms by hand and check clearance.
NOTE: Agitator drive chain is provided with a spring loaded idler, however, it is necessary to
periodically check the slack.
DANGER
Do not open inspection door or enter machine while in operation. Failure to do so may result in serious
injury or death.
10. BELT TENSION
With machine running at normal speed, belts should be tight enough to keep out the slack. Keep belts
tight to prolong life.
11. VAPORIZER (Propane Only)
The vaporizer is designed for year round operation. The vapor plumbing under normal conditions
should be operating at a temperature of approximately 120F to 140F. The temperature may be checked by
placing your bare hand on the plumbing and will range from warm to hot.
Check propane tank for liquid withdrawal. Vapor withdrawal will cause overheating of the vaporizer and
possible damage to the controls. If the vaporizer has been overheated, causing possible rupture, you will be
unable to control the plenum temperature.
WARNING
The vaporizer pipe should be inspected every season for pitting and heat damage. Replace
IMMEDIATELY if any damage is found.
12. CHECK OUT — BEFORE LOADING
All piping and burners have been checked and test fired at the factory. It is possible, however, that
some of the connections may have been loosened or damaged during shipment. After connecting supply tank
to dryer all connections should be tested under pressure with gas pressure on. Tractor can then be started and
dryer test run before loading with grain.
DANGER
Check with liquid soap solution, never with flame. Failure to do so may result in serious injury or death.
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